linux-kernel - Re:Re: [PATCH] tty: an overflow of multiplication in drivers/tty/cyclades.c

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Message-ID: <22cc7e30.8cb3.1430a57c434.Coremail.xiaoqixue_1@163.com>
Date:	Thu, 19 Dec 2013 18:12:40 +0800 (CST)
From:	xiaoqixue_1 <xiaoqixue_1@....com>
To:	"Greg KH" <gregkh@...uxfoundation.org>
Cc:	xqx12 <s2exqx@...il.com>, jslaby@...e.cz,
	linux-kernel@...r.kernel.org, chyyuu@...il.com,
	xuyongjiande@...il.com
Subject: Re:Re: [PATCH] tty: an overflow of multiplication in
 drivers/tty/cyclades.c

I am sorry for it because my git configure is not sound.

my real name Qixue Xiao , and my email  &lt;xiaoqixue_1@....com&gt;.
At 2013-12-19 08:57:40,"Greg KH" <gregkh@...uxfoundation.org> wrote:
>On Wed, Dec 18, 2013 at 09:00:29AM +0800, xqx12 wrote:
>> there is an overflow in the code :
>> cyz_polling_cycle = (arg * HZ) / 1000,
>> the multiplicator arg comes from user, so it may be an overflow if
>> arg is a big number. And the value of cyc_polling_cycle will be
>> wrong when it is used next time.
>> 
>> Reported-by: Qixue Xiao <xiaoqixue_1@....com>
>> Suggested-by: Yongjian Xu <xuyongjiande@...il.com>
>> Suggested-by: Yu Chen <chyyuu@...il.com>
>> Signed-off-by: Qixue Xiao <xiaoqixue_1@....com>
>
>I need a "real" name as the "From:" line here, especially as it doesn't
>match any of these lines either :(
>